Dynamic time over threshold method

K Shimazoe, H Takahashi, B Shi, T Orita… - … on Nuclear Science, 2012 - ieeexplore.ieee.org
The time over threshold (TOT) method has several advantages over direct pulse height
analysis based on analog to digital converters (ADCs). A key advantage is the simplicity of …

Delay grid multiplexing: simple time-based multiplexing and readout method for silicon photomultipliers

JY Won, GB Ko, JS Lee - Physics in Medicine & Biology, 2016 - iopscience.iop.org
In this paper, we propose a fully time-based multiplexing and readout method that uses the
principle of the global positioning system. Time-based multiplexing allows simplifying the …

Multi-level time-over-threshold method for energy resolving multi-channel systems

T Fujiwara, H Takahashi… - IEEE Transactions on …, 2010 - ieeexplore.ieee.org
Pixellated radiation detectors require an energy resolving multichannel system. The time-
over-threshold (ToT) method provides an inexpensive way to energy-resolving signal …

High energy photon detection using pulse width modulation

PD Olcott, CS Levin - US Patent 8,258,480, 2012 - Google Patents
Methods and systems for processing an analog signal that is generated by a high energy
photon detector in response to a high energy photon interaction. A digital edge is generated …

SiPM signal readout for inter-crystal scatter event identification in PET detectors

H Park, JS Lee - Physics in Medicine & Biology, 2020 - iopscience.iop.org
In positron emission tomography (PET) with pixelated detectors, a significant number of
annihilation photons interact with scintillation crystals through single or multiple Compton …

Analog and digital signal processing method using multi‐time‐over‐threshold and FPGA for PET

KB Kim, Y Choi, J Jung, S Lee, H Choe… - Medical …, 2018 - Wiley Online Library
Purpose The goal of this study was to develop an analog and digital signal processing
method using multi‐time‐over‐threshold (MTOT) and field programmable gate arrays (FPGA …

Pulse width modulation: A novel readout scheme for high energy photon detection

PD Olcott, CS Levin - 2008 IEEE nuclear science symposium …, 2008 - ieeexplore.ieee.org
In standard PET scintillation detection, the energy, timing, and location of the incoming
photon are recovered using analog signal processing techniques. The energy and location …

A new pulse width signal processing with delay-line and non-linear circuit (for ToT)

T Orita, H Takahashi, K Shimazoe, T Fujiwara… - Nuclear Instruments and …, 2011 - Elsevier
Traditional pulse-height-analysis systems suffer from the complexity arising from ADC
circuits. In particular, it is difficult to be applied to a large format array of pixilated detectors …

Time over threshold based multi-channel LuAG-APD PET detector

K Shimazoe, T Orita, Y Nakamura… - Nuclear Instruments and …, 2013 - Elsevier
To achieve efficient signal processing, several time-based positron emission tomography
(PET) systems using a large number of granulated gamma-ray detectors have recently been …

A two stage interpolator and multi threshold discriminator for the Brain-PET scanner timestamp calculation

SM Qaisar - Nuclear Instruments and Methods in Physics Research …, 2019 - Elsevier
The ability of properly localizing the cancerous cells is mainly dependent on the capability of
a Positron Emission Tomographic (PET) scanner to distinguish between the time-correlated …